HBASE-1879 ReadOnly transactions generate WAL activity

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@821245 13f79535-47bb-0310-9956-ffa450edef68

src/contrib/transactional/src/java/org/apache/hadoop/hbase/regionserver/transactional/TransactionalRegion.java

@@ -366,7 +366,6 @@ public class TransactionalRegion extends HRegion {
       }
       // Otherwise we were read-only and commitable, so we can forget it.
       state.setStatus(Status.COMMITED);
-      this.hlog.writeCommitToLog(super.getRegionInfo(), state.getTransactionId());
       retireTransaction(state);
       return TransactionalRegionInterface.COMMIT_OK_READ_ONLY;
     }